Clockwise from top left, Muktar Said Ibrahim, Yassin Omar, Hussein Osman and Ramzi Mohammed. A British judge sentenced the four al Qaeda-inspired bomb plotters to life in prison July 11, 2007, for their "very nearly successful attempt at mass murder" on London's transit system in 2005, two weeks after suicide bombers killed 52 commuters in the city.
Peter Clarke, head of the British Metropolitan Police Service's Anti-Terrorist Branch, speaks during a news conference in London, July 25, 2005, as images of four men then sought for questioning are displayed behind him. All four were in custody just four days later.
This image taken at the Warren Street tube station shows a man identified by police as Yasin Hassan Omar, 24. A suspect in the bombings, he was arrested during a July 27, 2005, raid in Birmingham, England.
This is an undated picture of Muktar Said Ibrahim, also known as Muktar Mohammed Said, 27. He was arrested (along with Ramzi Mohammed) July 29, 2005, at the Peabody Buildings housing project in Dalgarno Gardens, London, in connection with the attempted bus bombing in Hackney Road in East London.
This is an image of a man believed to be Muktar Said Ibrahim taken on the bus that was targeted.
This man, believed to be Ramzi Mohammed, was arrested (along with Muktar Said Ibrahim) July 29, 2005, at the Peabody Buildings housing project in Dalgarno Gardens, London, in connection with the attempted London underground bombing between Stockwell and Oval stations.
A man believed to be Ramzi Mohammed is seen in this image taken by closed-circuit TV at Oval, one of the three tube stations involved.
This is believed to be Osman Hussain, who was reportedly arrested July 29, 2005, in Rome by Italian police, seen in this image taken by closed-circuit TV at Westbourne Grove before the man traveled to Shepherd's Bush, one of the three tube stations involved.
Deputy Assistant Commissioner Peter Clarke holds up a food container similar to the type used in the attempted bombings, during a news conference in London, July 25, 2005. Clarke said the food containers, manufactured in India, were sold in about 100 stores around Britain, and he appealed to shopkeepers to call police if they remembered anyone buying them.
Police officers guard the entrance to Scotia Road in Tulse Hill, south London, July 24, 2005, where a suspect was arrested a day earlier "on suspicion of the commission, instigation or preparation of acts of terrorism," said a police spokeswoman on customary condition of anonymity.